If you want to check is that your website fit to view in different version of IE browser, you can use below 2 options:

internet-explorer

Internet Explorer Collection
Internet Explorer Collection contains multiple IE versions (from IE1 to IE8), which are standalone so they can be used at the same time.

Xenocode Browser Sandbox
Xenocode Browser Sandbox let you run any browser from the web, what you need is install the plugin to your browser.

Xenocode Browser Sandbox allow you check:

  • Internet Explorer 6, 7 and 8.
  • Mozilla Firefox 2 and 3
  • Google Chrome, Opera, and Apple Safari